The room is great value for the money, big and spacious. Located near the MRT and to one of the biggest parks in the city, the neighbourhood is not touristy, even though quite some westerners can be seen in the streets (guess they are mostly expats as there are some embassies nearby). The description is correct, as are the directions. Very easy to find if you follow them, you can tell that Evan has taken time to write them properly.
The building is more like a hostel than an actual homestay though. Not that it's a bad thing, just something to keep in mind. If you are looking for the experience of living with a family, this is not the place for you. Evan is very helpful and easy to communicate with, it's just not as though he's sharing the house with you, more like running a hostel in which he lives too.
Overall, we liked it here, it was what we were looking for. The price is good and we were completely independent, away from all the hassle of Khaosan or Sukhumvit.